Robert Campbell is a registered professional engineer and author who has written numerous technical articles and manuals. Mr. Campbell is a co-author of industry textbooks: (i) three volume, 869 page treatise titled Mineral Property Economics; (ii) Analyzing & Managing Risky Investments; (iii) Analysis and Management of Risky Investments; and (iv) Analysis and Management of Petroleum Investments: Risks, Taxes and Time. He was also a contributing author to the reference book titled Petroleum Evaluation for Financial Disclosures. In addition to his engineering consulting activities, Robert Campbell is an adjunct professor at the University of Oklahoma and has taught adult training programs dealing with the reservoir characteristics and economic aspects of Project Analysis and reservoir management since 1974.